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Cranks are constructed of either an aluminum alloy, titanium, carbon fiber, chromoly steel, or some less expensive steel.Tubular steel cranks (such as Tioga's Revolver) can be light and very strong, are usually found on BMX bikes, and are slowly finding their way to mountain bikes (dirt jumping and urban assault).
Bicycle brake cable: see Cable; Bottle cage: a holder for a water bottle; Bottom bracket: The bearing system that the pedals (and cranks) rotate around. Contains a spindle to which the crankset is attached and the bearings themselves. There is a bearing surface on the spindle, and on each of the cups that thread into the frame.
Q factor is a function of both the bottom bracket width (axle length) and the cranks. Bottom brackets axles vary in length from 102mm to 127mm. Mountain bike cranks are typically about 20mm wider than road cranks. [6] A larger Q factor (wider tread) will mean less cornering clearance (while pedaling) for the same bottom bracket height and crank ...
In partnership with Sugino, it introduced the 110/74mm BCD five-bolt triple crankset for mountain bikes, which soon became an industry standard. Next was the introduction of the Micro Drive 94/56mm BCD five-bolt compact mountain bike crankset, which saved weight, increased ground clearance, and permitted lower gearing for hill-climbing. New ...
In typical modern utility bikes, the bottom bracket spindle is separate from the cranks. This is known as a three-piece crankset (spindle, left crank-arm and right crank-arm). The cranks attach to the spindle via a common square taper, cotter or splined interface.
Crank arm A crank. One of the two arms of a crankset. Each arm connects a pedal to the bottom bracket. Crankset The bicycle drivetrain assembly that converts the rider's reciprocating pedaling action to rotating motion. It consists of two cranks (or arms), one or more chainrings (or chainwheels), plus
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